Soleimannejad Janet, Aghabozorg Hossein, Morsali Ali, Hemmati Foruzan, Manteghi Faranak
Acta Crystallogr Sect E Struct Rep Online. 2008 Dec 17;65(Pt 1):o153. doi: 10.1107/S1600536808042220.
The title salt, C(10)H(10)N(2) (2+)·2C(7)H(4)NO(4) (-) or (4,4'-bpyH(2))(py-2,3-dcH)(2), prepared by the reaction between pyridine-2,3-dicarboxylic acid (py-2,3-dcH(2)) and 4,4'-bipyridine (4,4'-bpy), consists of two anions and one centrosymmetric dication. In the crystal, there are two strong O-H⋯O hydrogen bonds involving the two carboxyl-ate groups, with an O⋯O distance of 2.478 (1) Å, and an N-H⋯N hydrogen bond between the anion and cation, with an N⋯N distance of 2.743 (1) Å. These inter-actions, along with other O-H⋯O and C-H⋯O hydrogen bonds, π-π stacking [centroid-centroid distances 3.621 (7) and 3.612 (7) Å] and ion pairing, lead to the formation of the three-dimensional structure.
标题盐C(10)H(10)N(2)(2+)·2C(7)H(4)NO(4)(-)或(4,4'-bpyH(2))(py-2,3-dcH)(2)是由吡啶-2,3-二羧酸(py-2,3-dcH(2))与4,4'-联吡啶(4,4'-bpy)反应制备而成，它由两个阴离子和一个中心对称的二价阳离子组成。在晶体中，存在两个涉及两个羧酸根基团的强O-H⋯O氢键，O⋯O距离为2.478(1) Å，以及阴离子与阳离子之间的N-H⋯N氢键，N⋯N距离为2.743(1) Å。这些相互作用，连同其他O-H⋯O和C-H⋯O氢键、π-π堆积[质心-质心距离为3.621(7)和3.612(7) Å]以及离子对作用，导致形成三维结构。
